Congestion income is calculated as follows:
congestion income [€/h] = commercial flow on day ahead market [MW] * area price difference [€/MWh]

Congestion originates in the situation where transmission capacity between bidding zones is not sufficient to fulfill the market demand and the congestion splits the bidding zones into separate price areas. Congestion income arises from the different prices that the sellers receive and the buyers pay when electricity flows from the higher price area to the lower price area. The power exchange receives the difference, which it then pays to the Transmission System Operators (TSOs). The TSOs spend the received congestion income on increasing the transmission capacity on its cross-border interconnectors according to the EU regulation.

Transmission capacity to be given to intraday market FI-EE.
After Elspot trades have been closed, real time intraday capacity is equivalent to the allocated intraday capacity. The real time capacity is updated after each intraday trade so that it corresponds to real time situation.

Transmission capacity to be given to intraday market EE-FI.
After Elspot trades have been closed, real time intraday capacity is equivalent to the allocated intraday capacity. The real time capacity is updated after each intraday trade so that it corresponds to real time situation.

Day-ahead transmission capacity from Estonia (EE) to Finland (FI). Transmission capacity is given hourly for every hour of the next day. Each hour is given one value. Day-ahead transmission capacity Fingrid will publish every day in the afternoon. This capacity will not changed after publication. Transmission capacity mean the capability of the electricity system to supply electricity to the market without compromising the system security.

Day-ahead transmission capacity from Finland (FI) to Estonia (EE). Transmission capacity is given hourly for every hour of the next day. Each hour is given one value. Day-ahead transmission capacity Fingrid will publish every day in the afternoon. This capacity will not changed after publication. Transmission capacity mean the capability of the electricity system to supply electricity to the market without compromising the system security.